The Heliopan 67mm #5 Light Yellow Filter is a basic contrast filter, primarily for use with black and white film, that is primarily used as a haze filter to subtly darken blue tones and increase overall contrast. There is an approximate 1.5-2x filter factor with this filter, requiring an increase of 0.5 to 1 stop for normal exposure.

The front and rear surfaces of the filter both feature a single anti-reflection coating. Each coating helps to increase light transmission by reducing reflections, scattered light, and ghosting. Additionally, they offer protection to the filter substrate while helping to keep the glass clean for longer than uncoated glass.

This Heliopan filter is constructed from Schott glass for increased optical clarity and color fidelity. It features a brass filter ring for durability as well as jamming prevention.

#5 Filter for Enhanced B&W Contrast    1.5-2x Filter Factor, +0.5-1 Stop    67mm Front Filter Threads    Front and Rear Coating    Schott Glass Construction    Brass Filter Ring

Light yellow contrast filter for black and white film subtly darkens skies and blue tones, reduces haze, and increases overall contrast.

Single coatings on both the front and rear offer protection to the glass and help to improve light transmission and image quality.

Constructed from Schott glass for optical clarity.

Brass filter ring helps to prevent jamming and provides additional strength.

Dual threading with 67mm front filter threads permits combining with other filters.

Related Questions and Answers

Q: 1. Does this filter have any coatings?

A: This Sigma WR UV Filter is coated to repel water drops and resist smudging from fingerprints. It is also treated to exhibit anti static properties to prevent microscopic dust from clinging to the front surface. This helps to ensure sharp images.

Q: 2. What White Balance setting should I use with this filter shooting DSO?

A: When using the Ice 67mm Lipo Light Pollution Filter teh camera should be set on daylight white balance.

Q: 3. Can 67mm rubber lens hood be used in Sony FE24 - 70 mm. F4.0 ZA without Vignetting?

A: We have not tested this hood on that lens. However, our opinion is that most likely it will not vignette at the 24mm end. It may with a filter. One thing with a rubber hood, you can move it in or out and that often can solve problems. Here is a recommended hood that is metal. Sensei PRO 67mm Wide Angle Aluminum Lens Hood B&H # SELHMW67. And of course, the lens comes with the Sony hood. Sony ALC-SH130 Lens Hood B&H # SOALCSH130.

Q: 4. What is the glass thickness?

A: Unfortunately, this specification is not provided by Hoya. Please contact the manufacturer directly.

Q: 5. Does lens also have anti-reflective coatings and how many?

A: Unfortunately no, it is not multicoated. This version is the coated version by Sigma: https://bhpho.to/2YVgoZm

Q: 6. What is the filter factor for this yellow-green filter?

A: Hoya 67mm X0 Yellow-Green HMC Filter filter factor is 1.5 stops.

Q: 7. I see this filter does not have a Wratten number specification, but is it closer to a #4 or #8? Assuming that is not closer to #3, #6 or #9 (since the name does not include "light" or "deep" as modifier in the color name).

A: This Nisha 72mm Yellow Filter is would be closest to a Kodak Wratten #8.

Q: 8. What is the length/height of this 67mm long lens hood?

A: The net height/length of this long lens hood is 40mm. The length including thread is 43mm.

Q: 9. What is the weight of this filter?

A: The manufacturer does not provide the exact weight of the filter, but the shipping weight (which includes the package) is 1.6 oz. The filter itself (without the packaging) would be approximately half of that -- 0.8 oz. (23 g).

Q: 10. is this compatible with Canon EF 100mm f/2.8L Macro IS USM

A: Yes, the Heliopan 67mm Metal Lens Hood (Long) will fit onto the 67mm filter threads on the Canon EF 100mm f/2.8L Macro IS USM Lens.